Nagios XI
Provides monitoring of all mission-critical infrastructure components including applications, services, operating systems, network protocols, systems metrics, and network infrastructure. Hundreds of third-party addons provide for monitoring of virtually all in-house and external applications, services, and systems.

1- Comprehensive IT Infrastructure Monitoring
2- Highest degree of monitoring server performance
3- Provides a central view of your entire IT operations network and business processes
4- Automated, integrated trending and capacity planning graphs allow organizations to plan for infrastructure upgrades before outdated systems catch them by surprise.
5- A powerful GUI provides for customization of layout, design, and preferences
6- Ease of Use
7- Multi-Tenant Capabilities
8- Multiple APIs provide for simple integration with in-house and third-party applications

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